import 'package:flutter/material.dart';

class MyApp19 extends StatelessWidget {
  const MyApp19({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        // 导航条
        appBar: AppBar(
          title: const Text('Flutter初体验',
              style: TextStyle(color: Colors.white, fontSize: 20)),
          backgroundColor: Colors.pink,
          centerTitle: true,
        ),
        // 主体区域
        body: GridView.builder(
          gridDelegate: const SliverGridDelegateWithMaxCrossAxisExtent(
              maxCrossAxisExtent: 120,
              mainAxisSpacing: 10,
              crossAxisSpacing: 10,
              childAspectRatio: 1),
          itemBuilder: (BuildContext context, int index) {
            return Container(
              color: Colors.red,
              alignment: Alignment.center,
              child: Text('传智播客 $index'),
            );
          },
          itemCount: 60,
        ));
  }
}
